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Echo: python-3.13: security update to 3.13.11+e2python3.13: security update to 3.13.5-2+e36

medium Tenable Cloud Security Plugin ID 459129

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email
 headers when serializing an email message allowing for header injection when an email is serialized. This
 is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the
 new behavior will reject the incorrectly folded headers in "BytesGenerator". (CVE-2026-1299)

Solution

Update the python-3.13 library and its related packages to version 3.13.11+e2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-1299

Plugin Details

Severity: Medium

ID: 459129

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 52.04

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:C/A:N

CVSS Score Source: CVE-2026-1299

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6

Threat Score: 2.3

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/24/2026

Vulnerability Publication Date: 1/23/2026

Reference Information

CVE: CVE-2026-1299